Power-transmitting mechanism



w. P. cRocKETTL POWER TBANSMITTING MECHANISM.

APPLICATION FILED MN. 16 i917.

1,318,648,A Patented 0111.111919.

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INVENTOR mmzzvug, J4 1 Bv A ATTORNEY a subjectof dom of Great l dent ofI-Iarrison, in the county of lEssexY and State of New Jersey, @haveinvented* UNITED sTATEs PATENT oEEIoE.

WILLIAM I. cROoKETuOE HARRISON, NEW JERSEY, AssIGNOR To THE SINGERMANU-` FACTURING COMPANY, A CORPORATION OE NEwiJERsEY.Y

POWER-TRANSMITTING IVIECIIANISM.A l

Specification of Letters atent. Patented 0613.14, 1919.-

Appiicatio'n exea January 1e, 1917. seriali N0.'142,eo6.

To all whom may concern: y y A n Be itknown that I, WILLIAM I. CROOKETT,

y the King of the United King- Britain and Ireland, and resi- Oertainnew and useful' Improvements in Power-Transmitting Mechanisms,` ofwhi'chthefollowing isa specification, lreference being had therein to 'the Y'accompanying Y drawings.

y This invention relates to improvements in powerYtransmitting*rmechanisms, and Y' has for its object to provideiaVariable speed gear drive 'of substantial andrelivable constructioncapableof manual control to vary I Y Vthe speed -of 'the driven'elements withp'ut arresting the action of the'driyln'gl elements.

Referring to thedrawings, which Yform a l part ofthe-speciicatioi'i,'Figure 1 is' van in- Y verted plan view of the'presentjimproved means and Fig is a sectional elevation on or 4describethe present invention as applied to any specific form of constructionfor f `effecting a givenresultorproduct, as it is applicable for use inconnection with the transmitting of Vpower generally., Referring to thefigures, 1 represents a Y rotary main or driving shaft carrying agearprovided member 2, 3 a gear carrying frame or yoke arranged `one at oneside andthe other atthe i havingy spaced bearing lugs tV and 5.

opposite sideof'the gearmember' 2 land with suitable z shaft 1,A andinto said yokefis journaled a ftubula'r worm-gear 6 carrying a gearmerni ber 7 meshing with the gear member 2, thus y connection 12.carrying at one end the tubular hub 13 slidably mounted V'on-the fixed,A stud 14, and at vits opposite endY forkedto [embrace a gear carryingsleeve 15 mounted ,to slide on and rotate with the driven shaft 16, saidgear carrying'sleeve rhaving suitopenings ,"(n'ot, shown)V through whichpasses @the inainably fixed uponV it the spiral gear 'members 17,18and19. 'Y y i `20 represents a gear shifting crank-arm suitably securedtothe outer end of thegear adjusting 1odv8 and provided with aspringplunger 2l'hav1ng suitably secured to it a jkn'urled head 2.2i,said crank-arm :and parts Y carried by it being adjustable about theaxis ofthe worm'gear tO selected positions co1'- irlespondingfin-"number toj'the gears: carried jopenings, corresponding in number'tothe 'number of gear `me`mbersfca`rried by said sleeve,y formed in said4stationary portion to seeurejthe gear member selected to coperate withthe worm-gear against accidental. @movement out of engagementy with thelatter'. i

` YWhen -it is desired to 'change thespeed of the shaft 16"the operatorwithdraws the plunger' 2l from :e'ngagementlwith the opening 24 lastemployed and rocks the yoke or frame -about the mainshaft, thus causingthe worin-gear to be disengaged from the last driven gear member carriedby the sleeve 15 "and through. the crank-arm 20 i oscillatei'the forkedconnection 9\to,through the shi-ftlng connection 12, move the selectedgear member infpositionto be engaged 'by saidworin-g'ear, when the-'yoke3 is `rocked In the opposite direction to Abring-into en ,gagenientwiththe worin-gear the selected gear-member, after which they are secured 'ythe plungernQl abeing `seated into theA opening 2L provided for theselected combination of coperating'zgear members.

Having thus set Vforth .the nature of the invention, what Iclaim hereinis z-f y A 1. In a vpower-transInltting mechanism, vin combinatiom adriving shaft, a driven shaft, a gear-member earried'by one of saidshafts, a multipleof gear-members mounted n toV rotate and havingsliding relationship with the,A other of said shafts, means foractuating said driven shaft from saidl driving shaft through the:intermediary of any one .ofsaidmultiple of, gear-members, in- .cludinganintermediate K gear-memberY and :I geareadjusting rod independent ofandcO-i axial withsaid intermediate gear-member.

'ics Y 2. In a power-transmitting mechanism, in combination, a drivingshaft, a driven shaft, a gear-member carried by one of said shafts, amultiple of gear-members mounted to rotate and having slidingrelationship with the other of said shafts, means for actuating saiddriven shaft from said driving shaft through the intermediary of any oneof said multiple of gear-members, including an intermediate shaft, aplurality of intermediate gear-members carried by said shaft, and agear-adjusting rod coaxial with said intermediate shaft.

3. In a power-transmitting.mechanism, in combination, a driving shaft, adriven shaft, a gear-member carried by one of said shafts, a multiple ofgear-members mountedto rotate and having sliding relationship with theother of said shafts, a yoke capable of oscillatory movements about theaxis of one l of said shafts, an intermediate shaft journaled in saidyoke, a gear-adjusting rod supported by said yoke and arranged coaxiallywith said intermediate shaft, andlmeans for actuating said driven shaftfrom said driving shaft including gearing carried by said intermediateshaft adaptedto be put in mesh with any one of said multiple of gears bythe actuation of said adjusting rod. n

4. Ina power-transmitting mechanism, the combination with a drivingshaft, a'gearmember carried thereby, a driven shaft, and a multiple of'gear-members mounted to rotate and having sliding relationship withsaid driven shaft, of means including `a gearadjusting rod, agear-member and a wormgear having the same axis of rotation, and

a gear shifting connection actuated fromA said rod for effectingtransmission of power between the gear-member carried by said drivingshaft and any one of the multiple gear-members carried by'said driven'shaft l selected at will. I f

5. In a power-transmitting mechanism, the combination with a drivingshaft, a gearmember carried thereby, a'driven shaft', and a multiple ofgear-members mounted to rotate and having sliding relationship with saiddriven shaft, of means for effecting dissimilar ratios of speed betweensaid driving and driven shafts, including a gear shifting connection, ayoke capable of oscillatory movement and provided with a gear-member, aworm-gear and a forked connection, the latter acting on saidgearshifting connection to shift said multiple of gear-members into selectedrelationship with said worm-gear.

6. In a power-transmitting mechanism, in combination with a drivingshaft, a gearmember carried thereby, a driven shaft, and a multiple ofgear-members mounted to rotate and having sliding relationship with saiddriven shaft, of means' including a coaxially arranged gear-achustingrod, a gearmember and worm-gear independent of said rod for effectingtransmission of power beftween the gear-member carried by said drivingshaft and any one of the multiple gearmembers carried by said drivenshaft, and means for holding said worm-gear in drivf `ing relationshipwiththe selected gear-member except at will.

7. In a power-transmitting mechanism, in Combination, a driving shaft, agear-member carried thereby, a driven shaft, a multiple of gear-membersmounted to rotate and 'having sliding relationship with said drivenshaft, a yoke capable of oscillatory movementsabout the axis of saiddriving shaft in a single plane only, and an oscillating gear-`adjusting rod, a gear-member and a wormgear independent of said rodcarried by said yoke for effecting transmission of power between ythegear-member carried by said driving shaft and any one of said multiplegearmembers selected at will.

8. In a power-transmitting mechanism, thev combination with a drivingshaft, a gearmember carried thereby, a driven shaft, and a multiple ofgear-members mounted to ro- A tate and-havin@i sliding relationship withsaid drivenshaft, of a gear shifting connection, a yoke capable ofswinging movements about the axis of said driving shaft, a tubularworm-gear journaled in said yoke and carrying a gear-member meshing withthe gear-member carried by saidmain-shaft, a gear-adjusting rodjournaled in said woringear and carrying at one end a gear shiftingcrank-arm and at its opposite end y a forked connection,fthe latteracting on said y gear shifting connection to shift said multiplegear-members into selected relationship with said worm-gear foreffecting dissimilar'ratios of speed between said driving and drivenshafts.

9. In a power-transmitting mechanism, the combination withA a ydrivingshaft, a gearmember carried thereby, a driven shaft, and a multiple ofgear-members mounted to ron, tate and` having sliding relationship withsaid driven shaft, of means including a gearadjusting rod provided witha crank-arm, a gear-member and a worm-gear for effecting transmission ofpower between the gearmember carried by said driving shaft and Y any oneof the multiple gear-members carried by said driven shaft selected tobest meet operative requirements.

10. In a power-transmitting mechanism, vin combination, a driving shaft,a driven shaft, a gear-member carried by said driving shaft, and amultiple of gear-members mounted to rotate and having slidingrelationship with said driven shaft, a' yoke mounted for oscillatorymovement upon said driving shaft, intermediate gearing carried by saidyoke, a gear-adjusting red arrangedcoaxially Vwith saidA intermedia-tegearing, an ,operativev connection, be-

tween said gear-adjusting rod and said mul- In testimony whereof I havesigned my tiple of gearing to shift the latter endWise name to thisspecification in the presence of 10 olf the driven shaft, andda manuzllyoperalolg two subscribing Witnesses.

e ement Carried by Sai Gear-a justin ro w for first oscillating saidyoke about th axis WILLIAM P' QROGKETT of the driving shaft and thenshifting said Witnesses:

multiple of gears laterally to meet speed re- ALVIN H. Boss, quirements.STANLEY N. SMITH.

Capiel of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents. Washington, D. G.

